Download LI-4302PA

LINE ISOLATOR / ODX DRIVER TYPE LI-4302
DATA SHEET
GENERAL
The LI-4302 Line Isolation Unit is primarily a two wire dial through unit designed for use in conjunction with Customer
Premises Equipment which is not capable of meeting the ACA requirements for line isolation and electrical safety.
The LI -4302 provides the appropriate isolation standards and allows connection to the PSTN of otherwise non permitted
equipment (subject to the approval of the ACA for the combined LI-4302 and terminal equipment).
The LI-4302 can also be used as an Outdoor Extension (ODX) Driver for PABX and Key Telephone Systems. The LI4302 regenerates the ringing signal and line feed to the remote equipment to meet the specifications below.
FEATURES
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Provides the necessary 3.5 kV ac isolation for more than one minute.
Provides 48 V line feed to the equipment.
Accepts ring voltage on the line side and regenerates ring voltage to the equipment
Detects off hook condition and loops the line.
Accepts decadic dialing from the equipment and transmits decadic dialing to line.
Is capable of transmitting signals across the voice frequency spectrum in both directions including DTMF signals.
TELEPHONE SYSTEM TO PA INTERFACING
The LI-4302 with ECN 766 is suitable for interfacing a telephone or spare trunk (CO) port of a telephone system to a
Public Address (PA) system for paging purposes. In this mode, the ‘equipment’ side is connected to the telephone
system and the ‘line’ side is connected to the PA with line level input. Simply picking up the telephone or the designated
line button will immediately connect you to the PA.
SPECIFICATIONS
Isolation
Insertion loss
Return loss
(Terminated at customer end with AUSTEL
Reference Impedance)
Seizure, hold and pulse dialing current
Pulse dialing response
Ring detect threshold
Ring output
Ring transfer response
Line seizure & decadic dialing detect current
Output Equivalent Circuit
Mains input
Power Consumption
Mains cord length
AUSTEL Certified Component Listing No.
ACA Supplier’s Code
Dimensions (single port)
Ordering Code
>3.5 kV ac, >5 kV dc
< 2 dB
> 20 dB at 300 Hz
> 30 dB from 600 Hz to 3400 Hz
Complies with AUSTEL Specification TS 002
< 150 micro seconds
30 V rms. @ 16 2/3 Hz
60 V ac rms. @ 50 Hz superimposed on 48 V dc, at nominal mains
(minimum 20 V zero crossing)
< 50 milliseconds
 12 mA (pick up detected at 2.5k across the line but not at 10k
DC loop resistance).
48 V in series with 900 , current limited to 3540 mA, at nominal
mains
240 Vac 50/60 Hz. (other voltages to order)
20 mA  5 VA maximum.
1.7 meters
A95/TI/0215
N 468
W 110 mm x H 52 mm x D 85 mm
LI-4302 (SY-4781)
Data Sheet for LI-430
ECN766
Issue 1
Page 1
BLOCK DIAGRAM
OFF HOOK
EQUIPMENT
LINE
AUDIO
RING
240V AC INPUT
MADE IN AUSTRALIA
DESIGN TWO THOUSAND PTY LTD
TELEPHONE: 03 9758 5933
E-MAIL: [email protected]
FACSIMILE: 03 9758 5560
WEBSITE: www.design2000.com.au
N468
Data Sheet for LI-430
ECN766
Issue 1
Page 2